Interesting Sequence(有趣的数列)[Special judge] 题目概述:是否存在一个长度为n的整数数列,其任意连续p项之和为正数而任意连续q项之和为负数? 方法:连续项a[i],a[i+1]...a[j]和的性质容易联想到以前n项和的方式表达,即s[j]-s[i],简洁明了. 由此发现只需求一个满足要求的s[0]~s[n]. 其中s[i+p]-s[i]>0,s[i]-s[i-q]<0.即s[i] 同理有s[i]>s[i-p],s[i+q]. 这是拓扑排序的雏形.…

Sorting It All Out 时间限制:3000 ms  |  内存限制:65535 KB 难度:3   描述 An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A,…

Sorting It All Out Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 29984   Accepted: 10373 Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from s…

题目传送门 晕牛Dizzy Cows 题目背景 Hzwer 神犇最近又征服了一个国家,然后接下来却也遇见了一个难题. 题目描述 The cows have taken to racing each other around the farm but they get very dizzy when running in circles, and everyone knows that dizzy cows don't produce any milk. Farmer John wants to…

https://www.luogu.org/problem/P2017 题目背景 Hzwer 神犇最近又征服了一个国家,然后接下来却也遇见了一个难题. 题目描述 The cows have taken to racing each other around the farm but they get very dizzy when running in circles, and everyone knows that dizzy cows don't produce any milk. Farm…

---恢复内容开始--- Genealogical tree Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4875   Accepted: 3236   Special Judge Description The system of Martians' blood relations is confusing enough. Actually, Martians bud when they want and where…

两道拓扑排序问题的范例,用拓扑排序解决的实质是一个单向关系问题 POJ1094(ZOJ1060)-Sortng It All Out 题意简单,但需要考虑的地方很多,因此很容易将code写繁琐了,会给力求code精简的强迫症患者一个警醒- - 题意:给出m组逻辑关系式,求n个字母间的排序,分排序成功-排序矛盾-不能确定三种情况输出相应语句 题解:拓扑排序,访问入度为0的结点,邻接点入度-1,然后继续访问入度为0的结点...直到访问完成为止 需要注意的地方在于三种情况根据最早确定的情况来输出,例如…

Gym Class  Accepts: 849  Submissions: 4247  Time Limit: 6000/1000 MS (Java/Others)  Memory Limit: 65536/65536 K (Java/Others) Problem Description 众所周知,度度熊喜欢各类体育活动. 今天,它终于当上了梦寐以求的体育课老师.第一次课上,它发现一个有趣的事情.在上课之前,所有同学要排成一列, 假设最开始每个人有一个唯一的ID,从1到NN,在排好队之后,每个…

poj 1094 Sorting It All Out Time Limit:1000MS     Memory Limit:10000KB     64bit IO Format:%lld & %llu Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from sm…

Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A, B, C, D implies that A < B, B < C and C < D.…